Senior AI Engineer

Salary: £100,000 - 150,000 per year

Requirements:

• 5+ years of experience as an AI/ML engineer delivering NLP and ML models into production SaaS • Production experience with LLMs, including RAG, fine-tuning, evaluation, and monitoring • Strong Python skills, including building APIs and integrating models into applications • Experience with NLP frameworks such as Hugging Face Transformers, PyTorch, spaCy, or TensorFlow • Experience with AWS and distributed systems • Experience building data pipelines and orchestration for model training and evaluation • Applicants must already hold the full right to work in the UK; we are unable to provide visa sponsorship • Nice to have: experience in legal tech or another document-heavy domain • Nice to have: experience with vector databases and semantic search, such as OpenSearch, Pinecone, or FAISS • Nice to have: experience with explainability and compliance for deployed AI • Nice to have: knowledge of React or TypeScript

Responsibilities:

• Lead development of AI features in our core product in a hands-on role • Design and build ML models for document parsing, search, classification, and summarisation • Integrate LLMs into product workflows with guardrails, evaluation, and monitoring • Optimise model serving and inference for latency and cost on AWS, including ECS, Lambda, and S3 • Build data pipelines for training and evaluation using PostgreSQL, Redis, and OpenSearch • Work with engineering, product, and QA in Scrum squads, with…